Congratulations! Learning about Windows 10 IoT Core and building a viable proof of concept (POC) or device is a huge accomplishment.
The next step for you is monetizing that device for commercial distribution purposes. There are two paths to commercialize Windows 10 IoT Core today. Both allow you to use Windows 10 IoT Core software for commercial purposes. You may choose the right path depending on your commercial scenario.
Learn more about Windows 10 for IoT Devices.